A marooned three-metre-long (nine feet) shark in South Korea has drawn more than a million visitors to the coastal city of Busan, boosting local retail sales and triggering a trademark war, as authorities rush to stop opportunistic vendors from cashing in on the viral phenomenon. The shark, nicknamed “Bukangi” in reference to the park where it has become trapped, has become an internet darling and tourist sensation after non-stop local media coverage about multiple failed efforts to encourage it...